xref: /openbmc/qemu/tests/qemu-iotests/037 (revision d2628b1eb761a5fbf08f367da405eb3314a1f068)
1 #!/usr/bin/env bash
2 #
3 # Test COW from backing files
4 #
5 # Copyright (C) 2012 Red Hat, Inc.
6 #
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
11 #
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 # GNU General Public License for more details.
16 #
17 # You should have received a copy of the GNU General Public License
18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
19 #
20 
21 # creator
22 owner=kwolf@redhat.com
23 
24 seq=`basename $0`
25 echo "QA output created by $seq"
26 
27 status=1	# failure is the default!
28 
29 _cleanup()
30 {
31 	_cleanup_test_img
32 }
33 trap "_cleanup; exit \$status" 0 1 2 3 15
34 
35 # get standard environment, filters and checks
36 . ./common.rc
37 . ./common.filter
38 
39 _supported_fmt qcow qcow2 vmdk qed
40 _supported_proto file
41 _unsupported_imgopts "subformat=monolithicFlat" \
42                      "subformat=twoGbMaxExtentFlat" \
43                      "subformat=twoGbMaxExtentSparse" \
44                      "subformat=streamOptimized"
45 
46 CLUSTER_SIZE=4k
47 size=128M
48 
49 echo
50 echo "== creating backing file for COW tests =="
51 
52 TEST_IMG_SAVE="$TEST_IMG"
53 TEST_IMG="$TEST_IMG.base"
54 
55 _make_test_img $size
56 
57 backing_io()
58 {
59     local offset=$1
60     local sectors=$2
61     local op=$3
62     local pattern=0
63     local cur_sec=0
64 
65     for ((i=0;i<=$((sectors - 1));i++)); do
66         cur_sec=$((offset / 512 + i))
67         pattern=$(( ( (cur_sec % 256) + (cur_sec / 256)) % 256 ))
68 
69         echo "$op -P $pattern $((cur_sec * 512)) 512"
70     done
71 }
72 
73 backing_io 0 256 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
74 
75 TEST_IMG="$TEST_IMG_SAVE"
76 
77 _make_test_img -b "$TEST_IMG.base" -F $IMGFMT 6G
78 
79 echo
80 echo "== COW in a single cluster =="
81 $QEMU_IO -c "write -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io
82 $QEMU_IO -c "write -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io
83 $QEMU_IO -c "write -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io
84 
85 $QEMU_IO -c "read -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io
86 backing_io $((2 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
87 $QEMU_IO -c "read -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io
88 backing_io $((8 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
89 $QEMU_IO -c "read -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io
90 backing_io $((11 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
91 
92 echo
93 echo "== COW in two-cluster allocations =="
94 $QEMU_IO -c "write -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io
95 $QEMU_IO -c "write -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io
96 $QEMU_IO -c "write -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io
97 
98 $QEMU_IO -c "read -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io
99 backing_io $((22 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
100 $QEMU_IO -c "read -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io
101 backing_io $((32 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
102 $QEMU_IO -c "read -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io
103 backing_io $((38 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
104 
105 echo
106 echo "== COW in multi-cluster allocations =="
107 $QEMU_IO -c "write -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io
108 $QEMU_IO -c "write -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io
109 $QEMU_IO -c "write -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io
110 
111 $QEMU_IO -c "read -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io
112 backing_io $((63 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
113 $QEMU_IO -c "read -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io
114 backing_io $((80 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
115 $QEMU_IO -c "read -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io
116 backing_io $((98 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
117 
118 _check_test_img
119 
120 # success, all done
121 echo "*** done"
122 rm -f $seq.full
123 status=0
124